Innovation > Forum > Calculating Nt1 in Bass  Calculating m, p and q in the Bass Model



Calculating Nt1 in Bass  Calculating m, p and q in the Bass Model
Tatiana How do you calculate Nt1 in the Bass formula?




Nt1
Voytech Nt1 cannot be calculated.
Usually it is given, since it represents the cumulative number of adopters so far (incl. period n1).
It is the base for your estimations of p,q and m.
Once you have those p,q,m values, you can calculate Nt, Nt+1 and so on that will converge to m.




Calculating Nt1
Ram Hi, Nt1 stands for the total number or the cumulative number of consumers who have already adopted the product. For example, you might have data for weeks 110 of the product launch. Then the total number of consumers who have purchased the product till week 10 = Nt1. Hope this helps.




Calculating other factors
Nick Hi! How can you calculate the other factors, I mean m, p and q  can I use regression analyse in SPSS software?




Marketing
Siy Hey, I also want to know how to calculate the p and q number. Or are there any factors will affect p and/or q, which should be included in the marketing decision making process, i.e. advertising budget? Thanks



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